<template>
  <div class="app-container" style>
    <div style="max-width:600px;margin-left: 80px;">
      <el-row :gutter="20">
        <el-col :span="20">
          <el-input v-model="filterText" placeholder="输入关键字进行过滤" clearable />
        </el-col>
        <el-col :span="4">
          <el-button class="filter-item" type="primary" @click="handleCreate()">
            <i class="el-icon-plus" /> 添加
          </el-button>
        </el-col>
      </el-row>
      <el-row style="padding-top:20px">
        <el-col>
          <el-tree
            ref="tree"
            :data="departments"
            :props="defaultProps"
            node-key="id"
            class="permission-tree"
            default-expand-all
            :expand-on-click-node="false"
            :filter-node-method="filterNode"
          >
            <span slot-scope="{ node, data }" class="custom-tree-node">
              <span>{{ node.label }}</span>
              <span>
                <el-button
                  v-action="permission.add"
                  type="text"
                  size="mini"
                  @click="() => handleCreate(data)"
                >添加子项</el-button>
                <el-button
                  v-action="permission.edit"
                  type="text"
                  size="mini"
                  @click="() => handleEdit(node,data)"
                >编辑</el-button>
                <el-button
                  v-action="permission.del"
                  type="text"
                  size="mini"
                  @click="() => handleDelete(data)"
                >删除</el-button>
              </span>
            </span>
          </el-tree>
        </el-col>
      </el-row>
    </div>
    <el-dialog :visible.sync="dialogVisible" :title="dialogType==='edit'?'编辑':'新增'">
      <el-form
        ref="form"
        :model="department"
        :rules="rules"
        label-width="80px"
        label-position="right"
      >
        <el-form-item label="上级部门" prop="parentId">
          <!-- <span>{{department.parentName}}</span> -->
          <treeselect
            v-model="department.parentId"
            :options="departments"
            :normalizer="normalizer"
            placeholder="选择上级部门"
          />
        </el-form-item>
        <el-form-item label="部门名" prop="name">
          <el-input v-model="department.name" placeholder="部门名" />
        </el-form-item>
        <!-- <el-form-item label="级别">
          <el-select v-model="department.levels" style="width: 140px" class="filter-item">
            <el-option
              v-for="item in levelsOptions"
              :key="item.key"
              :label="item.label"
              :value="item.key"
            />
          </el-select>
        </el-form-item>-->
        <el-form-item label="排序">
          <el-input v-model="department.sorts" placeholder="排序" />
        </el-form-item>
      </el-form>
      <div style="text-align:right;">
        <el-button type="danger" @click="dialogVisible=false">取消</el-button>
        <el-button type="primary" @click="confirmDepartment">确定</el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
// import the component
import Treeselect from "@riophae/vue-treeselect";
// import the styles
import "@riophae/vue-treeselect/dist/vue-treeselect.css";
import permission from "@/directive/permission/index.js"; // 权限判断指令
import {
  departments,
  addDpartment,
  updateDpartment,
  deleteDpartment
} from "@/api/permission/department";
import { deepClone } from "@/utils";
const defaultDepartment = {
  id: undefined,
  name: "",
  parentId: undefined,
  parentName: "",
  levels: undefined,
  deleted: 0
};
export default {
  name: "Department",
  components: { Treeselect },
  directives: { permission },
  data() {
    return {
      permission: {
        list: "dept:list",
        add: "dept:add",
        edit: "dept:edit",
        del: "dept:del"
      },
      defaultProps: {
        children: "childrens",
        label: "name"
      },
      department: Object.assign({}, defaultDepartment),
      departments: [],
      dialogVisible: false,
      dialogType: "new",
      levelsOptions: [
        { label: "集团", key: 0 },
        { label: "分公司", key: 1 },
        { label: "部门", key: 2 }
      ],
      filterText: "",
      rules: {
        name: [
          { required: true, message: "请输入部门名", trigger: "blur" },
          { min: 2, max: 15, message: "长度在 2 到 15 个字符", trigger: "blur" }
        ],
        parentId: [
          { required: true, message: "请选择上级部门", trigger: "change" }
        ]
      }
    };
  },
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val);
    }
  },
  created() {
    this.getDepartments();
  },
  methods: {
    async getDepartments() {
      const res = await departments();
      const result = res.result;
      this.diGuiTree(result);
      this.departments = [{ id: 0, name: "部门树", childrens: result }];
    },
    filterNode(value, data) {
      if (!value) return true;
      return data.name.indexOf(value) !== -1;
    },
    diGuiTree(item) {
      // 递归便利树结构
      item.forEach(item => {
        item.childrens === "" ||
        item.childrens === undefined ||
        item.childrens === null
          ? delete item.childrens
          : this.diGuiTree(item.childrens);
      });
    },
    normalizer(node) {
      return {
        id: node.id,
        label: node.name,
        children: node.childrens
      };
    },
    handleCreate(data) {
      this.dialogType = "new";
      this.dialogVisible = true;
      this.department = Object.assign({}, defaultDepartment);
      if (data != null) {
        this.department.parentId = data.id;
        this.department.parentName = data.name;
      }
    },

    async handleEdit(node, data) {
      this.dialogType = "edit";
      this.dialogVisible = true;
      this.department = deepClone(data);
      const parent = node.parent.data;
      this.department.parentId = parent.id;
      this.department.parentName = parent.name;
    },
    async confirmDepartment() {
      const isEdit = this.dialogType === "edit";
      if (isEdit) {
        await updateDpartment(this.department);
      } else {
        await addDpartment(this.department);
      }
      this.dialogVisible = false;
      this.$message({
        showClose: true,
        message: "保存成功",
        type: "success"
      });
      this.getDepartments();
    },
    handleDelete(data) {
      this.$confirm("确认删除?", "警告", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(async () => {
          await deleteDpartment(data.id);
          this.$message({
            showClose: true,
            message: "删除成功",
            type: "success"
          });
          this.getDepartments();
        })
        .catch(err => {
          console.error(err);
        });
    }
  }
};
</script>
<style>
.custom-tree-node {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  padding-right: 8px;
}
</style>
